Matthew Perry's sudden passing at 54 saddened the world.

Fans, co-stars, and celebs mourned his loss.

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"Friends" Instagram paid a heartfelt tribute.

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Maggie Wheeler praised Perry's generosity and humor.

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Adele honored Perry's impactful role in "Friends."

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Morgan Fairchild expressed shock and condolences.

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Yvette Nicole Brown remembered Perry's kindness.

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Shannen Doherty cherished their shared memories.

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Ian Ziering, Valerie Bertinelli, Mira Sorvino, Selma Blair, and Rumer Willis shared their grief and memories.

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